Very high machine loads, up to 25 gallons or more, 3-4 bags of material. For high viscosities, heavy and sticky materials, like mortar, plaster, concrete, screed, quartz-filled materials, etc. Professional tool for the tough daily use at the building site. 2.1 hp, 14.5 Amp, 2-Speed 410/580 rpm, includes mixing paddle # MK160HF Powerful moter, specifically designed for mixing Electronic/Variable Speed Controls w Safety Lock, Ergonomic/Strong Metal-frame grip with rubber bumpers on the edges shock resistant housing Stainless-steel gears with more teeth Two-Speed Gear includes patented Hexafix, Quick-Couple Paddle System Low Decibel level low vibration 2 Year Warranty Made in Germany. Collomix hand-held mixers are used for small batch professional mixing of jobsite materials. These materials may include everything from paint and lacquers all the way up to complex materials such as Glass-Fibre reinforced concrete---and everthing in between. Our mixers allow the contractor to work more efficiently and quickly while greatly reducing worker fatigue and strain. Because our paddle designs are the most effecient and modern on the market, the contractor will find that they help to eliminate improper mixing, lumps, air bubbles and the concentration of the materials at the bottom.